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Table 1 Metabolite distribution by molecular mass across metabolic encyclopaedias

From: Metabolome searcher: a high throughput tool for metabolite identification and metabolic pathway mapping directly from mass spectrometry and using genome restriction

Molecular weight range (Da)

Number of compounds in Metacyc

Number of compounds in KEGG

50-99

254

267

100-199

1,731

2,402

200-299

1,050

2,614

300-399

842

2,575

400-499

461

1,150

500-599

311

719

600-699

169

337

700-799

199

201

800-899

198

232

900-999

133

160

>1,000

119

224

Total

5,467

10,881